Valve



March 30 1926.

J. A. ELLIOTT -VALVE Filed Jly 24, 1925 ATTORNEY llatented Mar. 30, `1926. i s

* w UNlTE-D STATES PATENT) @meer 7 .TennA ARTHUR ELLIOTT, or aimerais, TENNESSEE..

VALVE. l

, I Application led July 24, 1925. Serial-No. 45,890;

T all 'who/11. 'it finctf/ cm1/cern.' f y Be it known that l, JOHN A.FLLrofi"r,' a citizen f of the United States, residing at Memphis, in the county of Shelby and State of Tennessee, have .invented new andusefui Improvements in Valves, of which the following is a specification. f d i `This invention relates to improvements 1n valves especially,designed for use as foot valves 'for operating locomotive iire doors,

. an object being'- to provide a valve which the invention 'further includes the following novel features and details of construction, to be hereinafter more fully described,

illustrated inthe accompanying drawings and pointed out in the appended claims.

In the drawings I Figure'l is a view of an airfvalve for lire door openers constructed in accordance with the invention.

Figure 2 is a detail view of the valve member.

Figure 3 is a sectional view taken substantially on the line 3 3 of Figure 1.

, Figure 4 is a detail elevation of the re movable sleeve.

Referring to the, drawings in detail wherein like characters of reference denote vcorresponding parts, the reference character indicates the casing of the valve which isY arranged at the outer end of an arinll.v i This casing includesa longitudinal'bore 12 'assembled by replacing these which is spaced longitudinally of the bore i from the port 15.

`The bore is 'provided `with a valve seat 18 which is located betweenthe outlet port andthe exhaust port 17, while the opposite end of the bore is provided with a valve seat 19 at its point ot communicationwith the chamber 13.

Slidable within the bore 121s ai cylindricalV valve member 20 'which isredueed at one end as shown atl 2l and' which is `Drovided with a longitudinally extendingfpas- 'i sage 22 which terminates short of thereduced portion 21' of the valve member. 'One end of the passage 22 is closedfby a remov-` able plug 23 andthe valve member is pro-k f .vided adjacent this plug closedr'end `with an inclined annular shoulder 24. which is adapted to engage'the seat 19, the latter being similarly inciined. The passage 22 of the valve ineinber 20 is provi'dedat each' end L with a lateral: passagef25iwhich opens outwardly into van annular groove 26provided around the valve inember near its opposite end's.-`VVV An inclined or Atapered shoulder 27 is provided around .the valve memberat'the inner end ofthe reducedportion 21 and removably mountedlupon this reduced portion is a ysleeve-28. The inner end ,of this sleeve is provided .with abeveled edge 29.`V which is adapted to engage the beveled valve `seat 18 which is located between the ports 15 and 17. A nut 30 threaded upon the outer end of the valve member 2O serves to'removably hold the sleeve 28 in place. adapted to be operated in the usual manner.

It will be apparent from the foregoing description` and yaccompanying drawings that the invention? provides ak valvewhich ymay be `closed to preventpassage 'of 'air The valve istherethrough from the inlet tothe Outletk ports, butv which will maintain communica-- tion between the outletand exhaust ports Vwhen in this position. l/Vhen the valve is opened, to provide communication between the inlet.v and outlet ports, communication with the exhaust port will be shut off. The.

arrangement of vthe valve member and valve vseats lis'such. as to prevent leakage of'air past the steinl of the yvalve while the valve 4mav'be readily disassembled by .removing ings. v

2. A valve com rising a Casin@T having av Y p t3 o t?) l bore o aen at one end ol lthe casino' and havdetails of construction and the right is herein reserved lto n'ialre such changes as properly fall within the scope of the appended claims. l

Having described the invention what is claimed is zl. A valve comprising a casing having a bore open at one end of the casing and having an outlet opening and an exhaust opening spaced inward from said open end .and having an inlet opening adjacent the opposite end of the casing, a beveled valve seat arranged within the bore and` spaced inward from the inlet opening, a second beveled valve seat located within thel bore between the outlet and exhaust opening-s7 a valve member operating longitudinally within the bore and having a longitudinal passage therein and Ta. lateral passage at each end of the longitudinal passage, said lateral passages opening outward into annular grooves which extendaround the'valve member and beveled shoulders extending around one edge of each of the annular grooves to engage the valve seats and regulate communication between the inlet and outlet openings and between the outlet opening and exhaust opening'an outlet opening and an exhaust opening spaced inward from said open end and having an inlet openmgv adjacentthe opposite end of the casing, a beveled valve seat arranged withinthe bore and spaced inwardV from the inlet opening, aV second beveled valve seat located within the bore between the outlet and exhaust openings, a valve member operating longitudinally Within the bore and having a longitudinal passage therein and a lateral passage yateach end of the longitudinal passage, said lateral passages opening ,outward into annular grooves which extend around the valve member and beveled shoulders extending around one edge of each of the annular grooves to engage the v valve seats and regulate communication between the inlet and outlet openings and between the outlet opening and exhaust opening7 one of said lshoulders being formed at one end of a sleeve removably mounted upon the vvalve member and said sleeve forming passage therein and a lateral passage at each end or the longitudinal passage, said lateral passages opening outward into annular grooves extending around the valve member,` areduced portion lat one end of the valve member, a lremovable' sleeve mounted upon the reduced portion of the valve member with the inner end of the sleeve forming one.

wall of the adjacent annular groove5`a beveled shoulder at the inner end of the sleevev to engage the adjacent valve seat, a beveled shoulder at the opposite .end of the valve .member to engage the opposite valve seat and means to hold the sleevein position.

ln testimony whereof I ailix my signature.

JOHN ARTHUR nLLioTT?. 

